Hyundai Elantra: Engine Control System / Heated Oxygen Sensor (HO2S) Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the HO2S connector.

3.	Measure resistance between the HO2S terminals 2 and 5 [B1/S1]. Measure resistance between the HO2S terminals 3 and 4 [B1/S2].

Check that the resistance is within the specification.

Specification : Refer to "Specification"

Removal

1.	Turn the ignition switch OFF and disconnect the battery negative (-) cable.

Disconnect the connector (A), and then remove the sensor (B).

•	Note that the SST (Part No.: 09392-2H100) is useful when removing the heated oxygen sensor.

[Bank 1 / Sensor 1]

[Bank 1 / Sensor 2]

Installation

•	Install the component with the specified torques.

•	Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

•	DON’T use a cleaner, spray, or grease to sensing element and connector of the sensor because oil component in them may malfunction the sensor performance.

•	Sensor and its wiring may be damaged in case of contacting with the exhaust system (Exhaust Manifold, Catalytic Converter, and so on).

Installation is reverse of removal.

Heated oxygen sensor installation :

39.2 ~ 49.1 N.m (4.0 ~ 5.0 kgf.m, 28.9 ~ 36.2 lb-ft)

Heated Oxygen Sensor (HO2S) Schematic Diagrams

Circuit Diagram ...

Accelerator Position Sensor (APS) Description and Operation

Description Accelerator Position Sensor (APS) is installed on the accelerator pedal module and detects the rotation angle of the accelerator pedal. The APS is one of the most important sensors ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: System Malfunction
Check Driver Attention Warning (DAW) system When the warning message appears, the system is not working properly. In this case, have the vehicle inspected by an authorized HYUNDAI dealer. WARNING The Driver Attention Warning system is not a substitute for safe driving practices, but a c ...

Hyundai Elantra AD (2016-2020) Service Manual: Front Door Belt Inside Weatherstrip Repair procedures
Replacement 1. Remove the front door trim. (Refer to Front Door - "Front Door Trim") 2. Remove the front door belt inside weatherstrip (A). 3. To intall, reverse the removal procedure. • When installing, install it by first contacting the inside part (basis p ...